Hose coupling



April 13, 1937. G A, ROBlsON 2,076,918

HOSE COUPLING Filed March 20, 1936 :MII/mlm gmc/nm VPatented Apr. 13, 1937 UNITED STATES PATENT OFFICE HOSE COUPLING George A. Robison, Bakeneld, Calif. Application March 24, 1986,l Serial No. 89,928 1 Claim. (Ci. 285-178)A This invention relates to hose or pipe couplings.

and has for one of its objects the production of a simple and emcient means for facilitating the connection of two sections of a hose or pipe to- 5 gether, and at the same time provide an emcient means for rmly locking and holding the sections tightly together after having been assembled.

A further object of this invention is the pro- 10 duction of a hose or pipe coupling wherein the sethe side walls of receiving slots of an adjoining member for firmly locking the sections of the 15 coupling together.

Other objects and advantages of the present invention will 'appear throughout the following specification and claim.

Figure 1 is a side elevation of the coupling in an assembled position;

Figure 2 is a side elevation of the coupling with the sections separated, certain parts being shown in section;

Figure 3 is a side elevation of the coupling showing the parts inthe position just prior to locking the pins in engagement with thelocking sleeve;

Figure 4 is a transverse section taken on line 4-4 of Figure -1, certain other parts also being shown in section;

Figure 5 is a longitudinal section taken on line 5-6 of Figure 1;

Figure 6 is a perspective view of a portion of f the female section of the coupling, showing the sock'et end and clamping sleeve; and

Figure 7 is an enlarged side elevation of a por` tion of the coupling joint, illustrating the pin receiving bayonet slot and angularly extending clamping slot.

By referring to the drawing, it will be seen that I0 designates the male section of the coupling which comprises a hollow tube having channels Il formed near the outer end to facilitate the connection of one end of the length of a piece of hose thereto. The male section III is provided with a pair of opposltely arranged laterally extending securing pins or circular lugs I2, which may be secured to the section I8 in any desired manner. The inner end of the section III is also beveled, as at I8.

The coupling also comprises a female section I4 having a central bore I5, which is adapted to constitute a continuation of the bore I8 in the male section III, when the sections are assembled.

'Ihe female section is provided with a beveled shoulder I'I against which the beveled end I8 of the male section I8 is adapted to firmly fit. The female section I4 is provided at its inner end with an enlarged collar I8, in which is formed a threaded socket I8. A shoulder 28 is formed at the inner extremity of the socket against which shoulder 28 fits a sealing resilient washer 2l, whereby a conventional threaded connection of a hose section may be iltted and secured therein.

The outer end of the section I4 is provided with a pair of oppositely arranged bayonet slots 22. 'Ihe bayonet slots 22 are provided with oppositely extending circu'mierentially extending portions 28 which are slightly inclined away from the inner end of the section I4, as shown in the enlarged detail Figure 7.

A locking sleeve 24 is slidably mounted upon the female section I4 and a coil spring 28 is carried by the section I4 having one end abutting the shoulder 28l of the section I4 and the opposite end engaging the inner end 21 of the locking sleeve 24. The coil spring 28 yieldably urges the locking sleeve 24 outwardly toward the outer end of the section I4.

The locking sleeve 24 is provided with a pair of inwardly extending inclined wedging notches 28 formed therein and extending inwardly from the outer end of the sleeve 24, as shown in Figures 6 and 7. The notches 28 are inclined slightly in the direction of the closed ends of the portions 28 of the slots over which the notches 28 are adapted to overlap when the sleeve 24 is in an extended or locking position. A key screw 28 is carried by the sleeve 24 and works in the slot 8|l formed in the female member I4, as shown in Figure 2. This screw 28 will prevent the sleeve 24 from rotating and will hold the sleeve in a proper position whereby the bayonet slots 22 and the notches 28 will register when the sleeve 24 is in an extended or locking position.

When assembling the sections of the coupling. the inner end of the male 'section III is placed in the outer end of the female coupling I4, the

-pms I2 fitting into the bayonet slots 22, as shown vin Figure 3. As the pins I2 are forced inwardly against the outer edge 8| of the sleeve 24 the spring 26 will be compressed, and the pins I2 will slip into the inclined notches 28. The walls 82 of the notches 28 will edge the circular pins I2 against the walls 88 of the portions 28 of the bayonet slots 22, thereby ilrmly locking the sections together and at the same time forcing .the beveled end I8 upon the shoulder Il.

From the foregoing description, it will be seen that a very simple coupling has been produced whereby the sections may be easily assembled, as well as easily separated. Due to the fact that 5 the sleeve 2l is spring pressed, it should be understood that as the circular pins I 2 are lforced against the outer end ll of the sleeve 24, the pins I2 will automatically slip into the inclined notches l2l and willbe forced by the walls 3K2A l0 into the portions-Nagainst the walls I3. Thisautomatic" action isl made possible due to the fact that the open ends of the notches 28 are in partial alignment with the longitudinally extending portions ci the bayonet slots 22.

15 It should be understood that the Apresent coupling construction is adaptablevfor hose, pipe and other forms of connection ofha similar nature.y

Having described the invention, what I claim I as new is: 20 QA coupling-of thef'class `described comprising a pair ot sections, the sectionshaving intertlt' ting engagement, one section having laterally ex-y l lugs within said bayonet slots, the inner ends of the bayonet slots being inwardly inclined toward their .closed ends, the notches in said. sleeve being, adapted to overlie the bayonet slots and receive said lugs for locking. said lugs within the inner ends of said bayonet slots, said notches be- Iing inclined toward the closed ends of said bayonet slots and having their open ends partly overlying the longitudinal portions of said bayonet slots, whereby said lugs will be automatically directed `into` the inner ends ot said bayonet slots and wedged therein as the lugs are forced against the outer end of said spring pressed sleeve.l l

GEORGE A. ROBISON'. 

